CN203494671U

CN203494671U - Novel third-grade cyclone separation single tube for catalytically cracking

Info

Publication number: CN203494671U
Application number: CN201320634169.3U
Authority: CN
Inventors: 赵艳; 谢绪扬; 王锐
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2013-10-15
Filing date: 2013-10-15
Publication date: 2014-03-26
Anticipated expiration: 2023-10-15

Abstract

The utility model relates to a novel third-grade cyclone separation single tube for catalytically cracking. According to the technical scheme, the novel third-grade cyclone separation single tube comprises a rectangular gas inlet, a barrel-shaped flow splitting core tube, a separation barrel, a dust removing structure, a flow stabilizing body, an ash baffling ring, a conical ash bucket and a material leg, wherein the separation barrel is divided into two parts including an upper annular space and a lower barrel space by a gas exhausting core tube; a dust removing cone is mounted at the bottom of a dust removing opening; a crack between the dust removing opening and the conical ash baffling ring is an ash bucket inlet; the ash bucket is composed of the barrel and the conical ash bucket by connecting; the material leg is connected with the lower end of the conical ash bucket; a baffle which is used for unloading the ash bucket and has a large inclined degree is arranged at the bottom of the material leg. The novel third-grade cyclone separation single tube for catalytically cracking has the beneficial effects that the treatment amount is great, the structure is compact, the occupied area is small and the installation is easy; compared with separators with other forms, the separation capability relative to solid-phase particles is high; the novel third-grade cyclone separation single tube for catalytically cracking is applicable to a gas-solid separation process of a third-grade cyclone separator in a catalytic cracking smoke energy recycling system.

Description

A kind of novel third level cyclone separating single tube for catalytic cracking

Technical field

The utility model relates to a kind of separator for catalytic cracking, particularly a kind of novel third level cyclone separating single tube for catalytic cracking.

Background technology

The more gas-solid separator for purifying and catalytic cracking ash-laden gas of current application is mainly multitube guide-vane cyclone separator, and its inside consists of some guide-vane cyclone single tubes, utilizes the principle of centrifugation to purify the ash-laden gas from regenerator.But this class multiclone stringing quantity is many, pressure drop inequality between pipe, the obstruction of part single tube, complex structure, equipment occupation space are large, and limited to the separating power of fine particle, operating flexibility is little, is not suitable for the operating mode that treating capacity is larger.

Summary of the invention

The purpose of this utility model is exactly in view of the foregoing defects the prior art has, a kind of novel third level cyclone separating single tube for catalytic cracking is provided, it has compact conformation, multitube stringing quantity is few, floor space is little, the advantages such as treating capacity is large, and operating flexibility is large, are applicable to purify the operating mode of high dust content flue gas.

Its technical scheme is: comprise rectangular air inlet, tubular shunting core pipe, separated cylindrical shell, dust outlet geometry, current stabilization body, ash-stopping ring, cone-shaped ash bucket and dipleg, wherein, separated cylindrical shell is deflated core pipe and is divided into upper, annular space and bottom barrel space two parts; Dust discharge cone is installed in dust-exhausting port bottom, and the crack between taper ash-stopping ring is ash bucket entrance; Ash bucket is connected to form by cylindrical shell and cone-shaped ash bucket, and the lower end of cone-shaped ash bucket connects dipleg, and the bottom of dipleg is provided with the big-inclination baffle plate for ash bucket discharging.

Above-mentioned separated barrel diameter is Φ 1000mm ~ Φ 1200mm, and the diameter of exhaust core pipe is Φ 200mm ~ Φ 390mm, and exhaust core pipe stretches out in separated cylindrical shell.

Height 1200mm ~ the 1400mm of above-mentioned separated cylindrical shell, dust outlet geometry height 1300mm ~ 1500mm.

Internal diameter Φ 200mm ~ Φ 390mm of above-mentioned tubular shunting core pipe, the sidewall of tubular shunting core pipe has eight latasutures, 50 ° ~ 60 ° of latasuture width 5mm ~ 10mm, height 200mm ~ 250mm and rotation directions.

The beneficial effects of the utility model are: the intraware of different structure form is rationally set in a separated single tube, makes single tube separative efficiency reach higher level; Working conditions change is less on the impact of separative efficiency; Treating capacity is large, compact conformation, floor space are little, is easy to install; Than other forms of separator, higher to the separating power of solid phase particles, be applicable to the gas solid separation process of third-stage cyclone separator in catalytic cracking flue gas energy-recuperation system.

Accompanying drawing explanation

Accompanying drawing 1 is structural representation of the present utility model;

In upper figure: exhaust core pipe 1, rectangular air inlet 2, tubular shunting core pipe 3, separated cylindrical shell 4, dust outlet geometry 5, current stabilization body 6, dust discharge cone 7, ash-stopping ring 8, ash bucket entrance 9, big-inclination baffle plate 10, dipleg 11, cone-shaped ash bucket 12, cylindrical shell 13, dust-exhausting port bottom 14, barrel space 16, separated cylindrical shell annular space 17.

The specific embodiment

By reference to the accompanying drawings 1, the utility model will be further described:

The utility model comprises rectangular air inlet 2, tubular shunting core pipe 3, separated cylindrical shell 4, dust outlet geometry 5, current stabilization body 6, ash-stopping ring 8, cone-shaped ash bucket 12 and dipleg 11, wherein, separated cylindrical shell 4 is deflated core pipe 1 and is divided into 17Yu bottom, upper, annular space barrel space 16 two parts; Dust discharge cone 7 is installed in dust-exhausting port bottom 14, and the crack between taper ash-stopping ring 8 is ash bucket entrance 9; Ash bucket is connected to form by cylindrical shell 13 and cone-shaped ash bucket 12, and the lower end of cone-shaped ash bucket 12 connects dipleg 11, and the bottom of dipleg 11 is provided with the big-inclination baffle plate 10 for ash bucket discharging.

Above-mentioned separated cylindrical shell 4 diameters are Φ 1000mm ~ Φ 1200mm, and the diameter of exhaust core pipe 1 is Φ 200mm ~ Φ 390mm, and exhaust core pipe 1 stretches out certain altitude in separated cylindrical shell 4.

Height 1200mm ~ the 1400mm of above-mentioned separated cylindrical shell 4, dust outlet geometry 5 height 1300mm ~ 1500mm.

Internal diameter Φ 200mm ~ Φ 390mm of above-mentioned tubular shunting core pipe 3, the sidewall of tubular shunting core pipe 3 has eight latasutures, 50 ° ~ 60 ° of latasuture width 5mm ~ 10mm, height 200mm ~ 250mm and rotation directions, this design has reduced exhaust core pipe bottom short-circuit flow, gas solid separation efficiency is high, meets the air inlet requirement of the upstream devices such as flue gas turbine expander.

Total height 400mm ~ the 600mm of current stabilization body 6,45 ° ~ 50 ° of cone angles, current stabilization body has reduced the throughput that enters ash bucket, also reduced the flow resistance of the endocorpuscular back-mixing of ash bucket and fluid, gas is had to certain castering action, realize air-flow and by outward turning, flow to the smooth transition of inward eddy, reduced the generation of local turbulence.

60 ° ~ 80 ° of ash-stopping ring cone angles, height 300mm ~ 400mm.Dust discharge cone 7 has improved the anti-back-mixing ability of single tube, thereby has improved the separative efficiency of separated single tube.

During the utility model operation, ash-laden gas tangentially enters separator by rectangular air inlet 2, from rectilinear motion, become and rotatablely move, after enter successively separated cylindrical shell annular space 17, barrel space 16 and dust outlet geometry 5, under centrifugal action, the solid phase particles that density is large is thrown toward limit wall, and under Action of Gravity Field, along limit wall landing to cone-shaped ash bucket 12 in; Wherein part dust-contained airflow directly enters tubular shunting core pipe 3 by air inlet 2 and causes blast pipe bottom short-circuit flow, has reduced separative efficiency, and tubular shunting core pipe 3 can reduce blast pipe short-circuit flow effectively herein, thereby improves separative efficiency; Enter after dust outlet geometry 5, along with reducing of radius, the air-flow of rotation shrinks to center flow at this, air-flow after purification is sailed against the current by 3 discharges of tubular shunting core pipe through ash-stopping ring 8 and current stabilization body 6 at dust-exhausting port place, particle touches the ash-stopping ring 8 laggard ash bucket that enters that is captured, the crack of a small amount of air-flow between dust discharge cone 7 and ash-stopping ring 8 enters cone-shaped ash bucket 12, realizes gas solid separation process.

Claims

1. the novel third level cyclone separating single tube for catalytic cracking, it is characterized in that: comprise rectangular air inlet (2), tubular shunting core pipe (3), separated cylindrical shell (4), dust outlet geometry (5), current stabilization body (6), ash-stopping ring (8), cone-shaped ash bucket (12) and dipleg (11), wherein, separated cylindrical shell (4) is deflated core pipe (1) and is divided into upper, annular space (17) and bottom barrel space (16) two parts; Dust discharge cone (7) is installed in dust-exhausting port bottom (14), and the crack between taper ash-stopping ring (8) is ash bucket entrance (9); Ash bucket is connected to form by cylindrical shell (13) and cone-shaped ash bucket (12), and the lower end of cone-shaped ash bucket (12) connects dipleg (11), and the bottom of dipleg (11) is provided with the big-inclination baffle plate (10) for ash bucket discharging.

2. a kind of novel third level cyclone separating single tube for catalytic cracking according to claim 1, it is characterized in that: described separated cylindrical shell (4) diameter is Φ 1000mm ~ Φ 1200mm, the diameter of exhaust core pipe (1) is Φ 200mm ~ Φ 390mm, and exhaust core pipe (1) stretches out in separated cylindrical shell (4).

3. a kind of novel third level cyclone separating single tube for catalytic cracking according to claim 1, is characterized in that: the height 1200mm ~ 1400mm of described separated cylindrical shell (4), dust outlet geometry (5) height 1300mm ~ 1500mm.

4. a kind of novel third level cyclone separating single tube for catalytic cracking according to claim 1, it is characterized in that: internal diameter Φ 200mm ~ Φ 390mm of described tubular shunting core pipe (3), the sidewall of tubular shunting core pipe (3) has eight latasutures, 50 ° ~ 60 ° of latasuture width 5mm ~ 10mm, height 200mm ~ 250mm and rotation directions.